Please install an operating system on your hard disk

[golden_panther]

Hello people,

I bought a hp laptop a month ago..........it has windows 10 pre installed.

Recently, Windows 10 installed and restarted my new HP Ryzen 3 after an update to the os. Since then, my laptop desktop background turned black. Start button, taskbar is not responding. Opening my computer showed a messgae "Explorer.exe error..........an attempt was made to reference a token that do not exist". I was able to open only chorme, firefox and qbittorrent (which were present on my desktop). NO windows applications are working. They showed the error"class not registered". So I restarted the pc from lock screen(holding shift).

I entered the advanced boot and chose the HP Recovery manager. I selected to reset my laptop to the factory settings. I selected "do not backup" option  which erases all data on hard drive and resinstalls windows using the original image.

Then this misery happend............!

The process formatted my entire hard drive and when it is going to reinstall windows, a blue screen appeared saying "pc ran into a problem and we need to restart".

After this restart, I see this screen.........saying

"Boot device not found

Please install an operating system on your hard disk

Hard disk(3F0)

............"

I ran the system diagnostic tests........my laptop passed both memory and hard drive tests.

I also set the BiOS settings to default. But no luck.

Now my questions are...........

1) If I clean install windows 10 using a bootble device, do I need to enter the product key? (Because, I don't have one).

2) What about system drivers?

3) If I install operating system on my own, will it effect the warranty of the product?

4) Will HP repair my system and bring it back to normal for free of cost?(My warranty is active)

[Echo_Lake]

@golden_panther

Welcome to HP Forums,

This is a great place to get support, find answers and tips,

Thank you for posting your query, I'll be more than glad to help you out 🙂

The boot device no found 3f0 error code indicates an issue with the HDD-Hard Drive. 

I’d like additional information in order to troubleshoot: 
What is the product number of your device? Use this link to find it: http://support.hp.com/us-en/document/c03754824 
Are you able to boot into windows desktop?  after error code pops out or skipping the error code?

While you respond to that, I recommend you perform the following steps to isolate the issue and arrive at a fix: 

Firstly, let's perform a hard reset: 

Removable Battery:

1) Shutdown the computer.  
2) Unplug all the Adapter and peripherals connected.  
3) Remove the Battery.  
4) Press and hold down the power button for 15 to 20 seconds.  
5) Plug-in the Adapter and put the Battery back into the computer.  
6) Try to turn on the computer.  

Built-in Battery:

1) Shutdown the computer.  
2) Unplug all the Adapter and peripherals connected.  
3) Press and hold down the power button for 15 to 20 seconds.  
4) Plug-in the Adapter.  
5) Try to turn on the computer. 

Next: Restore BIOS default settings.

1. Turn off the computer and wait five seconds.
2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.
4. Press F10 to Save and Exit.
5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer. (If the error message displays proceed to the next step)

Next: Test the hard drive using HP PC Hardware Diagnostics ( as you've performed Hard drive test I would request please repeat this process once again)

1. Plug the AC adapter into the computer.
2. Press the Power button for at least five seconds to turn off the computer.
3. Turn on the computer and start pressing Esc repeatedly, about once every second. When the menu appears, press the F2 key.
4. When the HP PC Hardware Diagnostics menu displays, click Component Tests.
5. In the Component Tests menu, click Hard Drive.
6. Click Quick Test.
7. Click Run once. If the computer has more than one hard drive, click Test All Hard Drives. The Quick Test begins.
8. If the computer has more than one hard drive, select the drive you want to test. To test all the hard drives, select Test All Hard Drives.

When a test is complete, the results display on the screen. Test results are also available in the Test Logs on the main menu.

If the hard drive passes the Quick Test, but a problem still exists with the hard drive, run the Extensive Test. This test includes the SMART Check, Short DST, Optimized DST, and Long DST. To run a specific test, select it from the Hard Drive Tests menu.

Please refer to this article check here Boot Device Not Found Error or Hard Drive Not Detected

Keep me posted for further assistance.

If I have helped you resolve the issue, feel free to give me a virtual high-five by clicking the 'Thumbs Up' icon below,
Followed by clicking on "Accept as solution" from the drop-down menu on the upper right corner,
Thank you for posting in the HP Support Forum.  Have a great day!

[golden_panther]

Hello Echo_Lake

Thank you for responding.

I have my semester exams in a week.

So, I have no time to perform the actions suggested by you.

By the way,

my notebook model:HP notebook-15q-dy0004au

serial number: CND8336GD5

product number: 5JS20PA

and my laptop's one year HP support (warranty) is still active.

Will the HP service people solve this issue?

If yes then please tell me the procedure to approach them.

Thank you in advance.

-golden_panther

[Echo_Lake]

@golden_panther
Thank you for posting back.

I'm sending out a Private message to assist you with the next course of action.

Please check your Private message icon on the upper right corner of your HP Forums profile

Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link: https://h30434.www3.hp.com/t5/notes/privatenotespage